I was pretty much in "fight-or-flight" mode at the beginning of the morning session. I had done the problems in the latest version of the NCEES sample questions, but not under simulated test conditions, so I was understandably worried about not being able to keep up the 10 questions/hour pace. Those worries wound up being unfounded (I had about an hour to spare for both sessions.)
What helped me to pass the exam on my 1st attempt was enrolling in a PE refresher course and having the discipline to study and work practice problems every day, 2-4 hours each day, for 3 months. As dresherm above posted, the NCEES sample problems were a very big help in solving some of the actual exam problems.